Separator.



J. S. FASTING.

SBPARATOB..

APPLICATION FILED JULY 21, 1910.

Patented Dec. 31, 1912.

2 SHEETS-SHEET l.

SWU o@ J. S. FASTING.

SEPARATOR.

v APPLICATION FILED JULY 21, 1910. 1,049,217. Patented Dec.31,1912.

2 SHEETS-SHEET 2.

muren sauras raruisr cierren.

J' OHAN SIGISMUND FASTING, 0F FREDERIKSBERG, NEAR COEENI-IAGEN, DENMARK, ASSIGNOR TO F. L. SMIDTH & CO., OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

SEPARATOR.

i To au whom t may concern Be it lmown that I, JOHAN SiGIsMUNn FasTING, a subject of the King of Denmarkl residing in Frederiksberg, near Copenhagen, Denmark, have invented certain new and .useful Improvements `in Separators, of which the following is a specification, reference being had to the accompanying drawings, forming a part hereof.

This invention relates to the separation of granular materials, comprising grains or particles which are of comparatively small size but nevertheless differ in size orV in specific gravity, the object being to accomplish the separation of the smaller or lighter grains from the larger or heavier grains more expeditiously and more economically than is possible with the sieves ordinarily employed for the purpose.

ln accordance with the invention, the material to be treated, composed of'grains or particles of different sizes, is deposited upon an inclined surface which is shaken orvibrated, preferably in a substantially vertical direction. The coarser particles of the vmaterial7 or particles of greater specific gravity, as is quite obvious, will move down- `ward on the inclined surface until they pass from the inclined surface. The liner particles, or the particles of less specific gravity, will wander upward on the inclined surface until they pass over its upper edge. rlhe reason for this action of the finer or the lighter particles is by no means obvious and Vhas not yet been ascertained with certainty.

Nevertheless it is an assured fact that the liner or the lighter particles will wander upward on the surface and'that the greater the inclination of the surface, `the greater Vwill be the proportion of the coarser or Specification of Letters Patent,

Application led July 21, 1910.

Fatented Decll, i912. serial No. 573,006.

embodiment of the invention. Fig. 3 is a view in vertical section, showing another practical embodiment of theinvention.

ln the view which is presented in F ig. 1 and is illustrative of the general character of the invention, the plate a, upon the upper surface of which the material to be separated is deposited, is shown as a fiat, rectangular plate, inclined at an angle of about 20 from the horizontal, with its upper and lower edges horizontal. The surface of the plate is relatively smooth and unbroken, having no transverse channels or ribs to prevent the free movement of particles of matter thereon. It is assumed that the plate is vibrated rapidly in a generally vertical direction, as indicated by the double arrow below the same, by any suitable `means. The material to be separated is fed by any suitable means, such as a conveyer, indicated at b, to a point near the middle of the plate. rlhe coarser or heavier particles upper edge into a suitable receptacle, as indicated at d. lf the inclination of the plate' a is changed so that it approaches more nearly the horizontal, the character of the material to be separated remaining unchanged, it will be found that so-me of the less coarse or the less heavy grains or particles which before passed downward on the surface of the plate will now wander upward,- while if the inclination'of the plate be changed so that it is more steeply inclined, it will be found that some of the coarser or thelieavier grains or particles which before wandered upward on the surface of the vibrating plate will now pass downward. Adjustment of the angle of inclination of the surface of the vibrating plate therefore furnishes a means for determining the lin-s of separation, as to the he other end. Furthermore, while the plate .v

a is shown in liif. l as a flat rectangular plate, it will be obvious may be other- Wise toi-med to meet diderent conditions oit use.

ln the enfibodiinentv oit the invention represented in lllig. 2, the plate a is shown as forming the inclined bottom ot a bon-like structure, between the sides e and f ot which is placed another inclined. plate g, the upper edge ot Which stands about over the middle of the plate e, and a horizontalplate It dropped slightly below the upper edges ot the sides and end z' of the bon-like structure, with its lett handedge aboutl over the middle of the plate g. The material. to be separated is deposited on the plate .le by any suitable means and is distributed over its left hand edge upon the plate g, on which it undergoes a preliminary separation, the coarsest of the material passing downward and over the lower edge ot the plate g, whence it is discharged, as at g', While the less coarse material passes over the upper edge of the plate g and is deposited upon the yplate a, Where it is againseparated, the coarser material passing downward over the lower edge of the plate a, as at a', While the liner material passes upward over the upper edge ot the plate a. As a convenient means for vibrating or shaking the plates and also for permitting the angle ot, inclination thereof to be adjusted, the `hou a, e, f, is mounted, with aclamping joint l which permits angular adjustment of the box, on a rod m which is supported by a spring n and is guided at its lovverend, for vertical movement, by a suitable guide m. The spring n is .supported by a suitable frame ze' and on the rod m is mounted a rotatable pulley o provided with an eccentric Weight o the pulley being rotated rapidly by a belt Z22 from a. suitable source. ar-l rangement produces a rapid vibration or v y shaking of the boxin` a verticaldirection with a consequent separation of the material on the plates' a and g in the manner already described.

In another embodiment of the invention,

4` shown lin Fig. 8, a circular shell or casing p toA , rod p is connected by a having a conical under part pis mounted upon rods p2 and p which are' movable vertically in suitable guides and p5. The

lin g with a crank ping" ona disk "g2, which is suitably supported and may be rotated rapidly by any convenient means. The material to be separated is delivered through a funnel .pa in the 'top of the casing p upon a horizontal, circular plate r trom the edge iof which itfalls upon a rusto'zconical plate shaving its bottom an opening s. The finer material which wandersupward on the plate s falls over its edge upon a frusto-conical plate t which 'also has 1n its bottom an 'openin t. From the upper edge of the plate t the er material in-hke lmanner falls upon a trustey intente conical plate u, having in its `bottom an opening u', and tromthe plate u the liner material falls upon a conical plate o Which has at its lower point a discharge chute o outer conical Wall p" ot .the shell or casing and is linally delivered from the separator through a discharge chute vp, As will be observed by examination ofthe drawing, the plates s, t, u and o have successively a steeper inclination, so that the coarser Inaterial is .Well separated trom the hner material, the tvvo grades of material being eventually delivered separately trom the apparatus. Reference is made above to coarser material only, but it will be understood that this form, of apparatus operates,"as does the term shown in Fig. 2, as Well to separate heavier'particles from lighter particles as to separate coarser particles from' ner particles. l

llt will be understodthat various other arrangements 'of` inclined plates, whether dat, curved or Warped, yadjustable or fixed, l,

and vibrated or shaken in any sduitable manner by any suitable means, may be made to meet varylng conditions of use Without departing from the s irit of the invention which isnot restrictedP to any particular arrangement. Y v

ll claim as my invention: 1. An'a-pparatus for separating granular materials comprisinga plate having an inclined 'unbroken surface and mounted for reclprocation bodily 1n' 4a substantially vertical direction, and .means for vibrating or Vshaking the plate ina substantially vertical direction to separate said material bythe vibration of sald plate alone.

2. An apparatus for separating granular materials comprising a plurality of inclined plates with unbroken surfaces and With the upper edge of each higher plate over the middle portion of the next lower plate and 'means to vibrate or shake said plates bodily in a substantially vertical direction.

.3. 2in apparatus for separating granular materials comprising a plurality of inclined plates with unbroken surfaces and with the upper .edge of each higher plate over the middle portion of the next lower plate and means to vibrate or shake said plates bodily in a! substantially vertical direction, the severalplates having different inclinations.

4f. An apparatus for separating granular materials comprising a plurality of inclined plates with the upper edge of each higher plate over the middle portion of the nett` lower plate and means to vibrate or shake said plates, ea plate below e uppermost having a steeper inelination than the one ,of said` material l'co move downwardly 10 1 .K 5; The method of separa-fing ranular or lThis" specicat-ion signed and viritnessed pulveruleni; material that cons-is s in nob chie` 21st day of June AfD., 1910.'

siructedly supporting said material at an in- JOHAN SIGISMUND FASTIZNG l clinationto the horizontal and .imparting substantially vertical rapid impulses to the `Signed in the Rresence 015+ same to cause a part of said material `to HERMAN RE, creep upwardly uponitssupport and a part JULIUS LEHMANN. 

